Coil-shaping machine.



S. H. BROWNING.

COIL SHAPING MACHINE.

APPLICATION FILED MAR. 25. I918.

Patented Mar. 25, 1919.

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S. H. BROWNING.

COIL SHAPING MACHINE.

APPLICATION FILED MAR. 25. 1918.

1,297,998. Patented Mar. 25, 1919.

3 SHEETS-SHEET 2.

Fl om p\oobcoo S. H. BROWNING- COIL SHAPING momma.

APPLICATION FILED MAR. 25, I918. 1,297,998, Patented Mar. 25,1919.

3 SHEETS-SHEET 3.

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SAMUEL H. BROWNING, OF COLUMBUS, OHIO.

COIL-SHAPING MAGHINE.

1 '0 all whom it may concern:

Be it known that I, SAMUEL H. BROWNING, a citizen of the United States,residing at Columbus, in the county of Franklin and State of Ohio, haveinvented certain new and useful Improvements in Coil-Shaping Machines,of which the following is a specification.

This invention relates to improvements in coil shaping machines, and hasfor its primary object to provide improved means for twisting or bendingelectric conductors into such formations or shapes as to facilitatetheir application to motor armatures, so as to permit the latter to besecurely and efliciently wound in a convenient and expeditious manner. a

Another, object of the invention is to render the variouselements of themachine adjustable, whereby wire may be twisted to assume loopresembling contours of diversified dimensions, so that the same will bereadily applicable to armatures of varying proportions.

Further objectsreside in a machine of the above character possessingsimple and reliable features of construction, convenient to operate andadjust and efficient in operation and durability.

With these and other objects in view, as

will appear as the description proceeds. the

invention accordingly consists in the novel features of construction,combination of ele ments and arrangement of parts hereinafter fullydescribed and having the scope thereof indicated. in the appendedclaims.

In the following description and in the accompanying drawings there hasbeen set forth an embodiment of the invention which is nowconsidered tobe one of its preferred forms, however, it Wlll be understood that theinvention isnot limited, in scope to'the details of construction as willbe set forth,

but such. changes may be made therein, and

equivalent structures substituted, as practice may deem necessary. i Inthe drawings: I Figure '1 is a front elevation of a' wire twistingmachine constructed in ;accordance with the principles of the invention.

Specification of Letters Patent.

Patented Mar. 25, 1919.

Application filed March 25, 1918. Serial No. 224,469.

Fig. 10 is a detail view of the mechanism for initially shaping thecoils prior to their insertion into the twisting mechanism, and

Figs. 11 and 12 are diagrammatic views showing the general appearance ofthe coils before and after their insertion in and removal from thetwisting mechanism.

:Similar characters of reference denote corresponding parts throughoutthe several views of the drawing.

In the preferred embodiment of the invention, the latter consists of ametal frame or bed 1, including a plurality of spaced vertical legsections, and secured in any preferred manner to the upper edges of saidside sections is a table 2. the latter being extended to bridge the gapformed between the side sections and to provide a firmly united bedstructure. Cross rods 3 serve to further brace the bed structure and aresituated adjacent to the lower ends of the side sections. Positionedcentrally of the bed 1 and extending vertically of the machine is anoperating shaft 4, which latter extends through a vertical opening 5provided. in the central portion of the table 2. The lower end of theshaft is equipped with an opera-t ing' pedal which latter is employedfor manually effecting the, vertical movements of said shaft, for apurpose to be hereinafter explained. The shaft is normally maintained inan elevated position through the" medium of a plurality of coiledsprings 6,

which have their upper ends secured to the under side of the table 2,and the lower ends fastened to a clamp 'l, which'isrigidly vatedposition.

The upper end of the shaft 4 is equipped with a block 8, through whichpasses a longitudinally extending rod 9, whereby the movements of saidshaft will be directly irnparted to said rod 9. The vertical more mentsof the operating shaft are controlled by providing the upper end of theshaft, ha mediately below the block 8, witlran adjustable collar 10,which collar formed with alined openings for the reception of aremovable piirll, said latter being adapted to also engage with any oneof a plurality of vertically disposed openings 12 formed in the upperend of the shaft 4; and it will be seen that by removing the pin ll, thecollar 10 may be vertically adjusted with regard to saidshaft, and maybe maintained in any one of a desired number of positions by simplypassing the pin 11 through the alined openings of the collar and shaft.Thus whenlthe shaft is depressel, by foot pressure upon the pedal 5,said collar will contact with the block 13, positioned upon the uppersurface of the table 2 and throu h which the shaft d passes, and thisblock r v by virtue of its disposition will check or arrest thedownwardmovement of said collar 10 and consequently the coinieci'edshaft 4.

The outer ends of the rod 9 are connected with a plurality of downwardlydiverging links ll, which links nave their lower ends adjustablyconnected with a plurality of spaced rocking members 15, which latteroscillate or spread apart to assume the dot ted line positions shown inFig. 3, this being accomplished by connecting said members with said rod9 through the medium of the links 14:. vThe throw or movement of thelrockingimembers is susceptible to adjustment, this being performed byn-oviding said members with a plurality of vertically alined openings18, and said openings are adapted to receive pins or bolts 19, wnich areutilized to connecting the lower ends of'said links to: the rockingmembers. Thus it will be manifest that by raising the points ofconnection existing between saidllinlrs and members, that the throw ofthe latter will: be correspondingly decreased, and that.

by lowering these points of connection, or in other words, by adjustingthe same toward the pivots 17 of said rocking members, that themovementof the latter will be come spondingly increased. If desired, slots maybe formed in said members in lieu of the spaced openings 18. i

Integrally formed with the rocking incinbersare awplurality of inwardlyprojecting vertically disposed flanges 20, in which are providedvertically extending slots 21, and adapted to be secured to said flangesare a plurality ,of horizontally extending and transversely spaced angleiron bars 22. Said bars are adjustably secured to the flanges 20 throughthe medium of bolts and nuts 23, which pass through the slots 21 andthrough the openings formed in the ends of said bars, whereby upon thetightening of the nuts 23, said bars will .be friction-ally clamped insecured relation with the flanges 20, as will be clearly understood.Through the use of the slots 21, said bars may be vertically adjusted toassume different posi-' ti'ons throughoutthe height of said flanges.

Carried by the block 13, and by fixed bearings 2%, formed upon the endsof the table 2 are a plurality of longitudinally alined guide rods 25,which rods are adapted to carry a plurality of sleeves 26 preferablysquare in cross section, said sleeves being so positioned with relationto theupper surface of the table 2 that it is impossible to rotate thesame aboutthe rods 25, and furthe, said sleeves arelocated between theblock'13 and the bearings 24 so as to be capable of being reciprocated'longitudinally of said table. Each of these sleeves carry an invertedu-shaped metallic strap 27 which latter have their lower ends secured asat 28 to the sleeves 26, whereby said straps and sleeves form a unitarystructure. Adjustably carried in the upper ends of the straps 27 are aplurality of inwardly extending, slidablc members 29. These members areformed with outwardly projecting, guide shoulders 30, which are adaptedtofrictionally engage with the inner edges of the straps 27. Each ofthemembers 29 is formed with a threaded bore for the reception of aclamping bolt 31, which latter is provided with an enlarged head 32adapted to engage with a washer Thus it will be manifest that byloosening the bolt 31, the member 29 associ ated therewith may bevertically adjusted within one of the straps 27 to'assume a desiredvertical position, and then by tighten ing the bolt 31 into firmfrictional engagement with said washer 33, said member 29 will have theshoulders 30 thereof drawn into firm frictional relation with the sidesor edges'of the strap 27, and willthus be maintained in a securelyadjusted position. The

members 29 are further provided with in wardly projecting ears 34, andto which are adapted to be secured a pair of opposed wire grippingplates 35, the latter being'secured to said ears through the agency ofscrews or similar securing elements 36. The relative distance betweenthe inner faces of the gripping plates 35 may be controlled by insertingor removing a spacing block 37, which is usually positioned between theears 34 and one of the side plates 35, and it will be obvious that.through the use of the block 37, or through similar blocks of larger orsmaller proportions, that the plates 35 may be drawn into firmengagement with the ends of wires 38 which are placed into the machinefor twisting purposes. The plates are employed to receive the loopedends of the wires 38 and the latter are retained within said platesthrough the manner of frictionally drawing the latter together andthrough the medium of a plurality of removable pins 39, which passthrough alined openings40 formed in the plates 35. Thus in operation,the wire is first bent into substantially loop shaped formation, and theends thereof are secured between the plates 35, so that the said wirewill be securely retained by the machine.

It is then the purpose of this machine to spread or bend the wire intosuch formation as to render the latter in such condition as to beconveniently applied to the armature of a motor. To this end use is madeof a plurality of longitudinally and transversely spaced intermediatewire gripping members A, which latter in this instance are slidablycarried upon the angle bars 22, and are positioned intermediately of theplates 35. Each of the members A consists of a frame 41, which is formedwith a socketed portion 42 shaped to receive the bars 22, and of suchconstruction as to permit the frames 41 to be reciprocated over saidbars. Manipulat ing bolts or screws 43 are threaded (into the frames41,'and have their inner ends swiveled within blocks 44, shaped to fitthe angular under-sides of the bars 22. Thus it will be seen that byrotating the screws 43, the blocks 44 thereof will be forced intofrictional relation with the bars 22, so as to maintain said frames in astationary position upon said bars. I

The upper surfaces of the frames 41 are provided with upstanding ribs 45and 46, which ribs 45 are bored to receive a sliding plunger 47 theinner end of the latter carrying a head 48 which is adapted tofrictionally engage with the portions of the wires passing through saidframes 41 and to force the latter into frictional'engagement with theouter rib 46. whereby said wires will be securely retained within saidframes'. Each of the plu'ngers 47i is retained in frictional engagementwith saidwires through the me dium of a 'set screw '49, the latter beingadapted to firmly engage with the plunger 47 so as to control themovement of the lat ter. The wires are further prevented from risingupwardly in the frame by virtue of a sliding plate 50, mountedupon eachof the frames 41, and adapted to reciprocate within guides providedbetween the ribs 45 and a recessed plate 51, tie latter being securezl'to said ribs 45 through the medium of screws or other suitable fasteningmeans. The end of each plate 50 is provided with an upturnedmanipulating portion 52, whereby said latter plate may be freelyreciprocated so as to cover the wires 38. r The end of each plate 50 isadapted'to enter a recess 53, formed in the outer rib 46, thus renderingit impossible for the wires located between said rib 46 and the head 48to work loose from engagement with the frames.-

Having described the structural features of the invention, the operationof the latter is as follows: 7

Coiled wire taken off of a winding machine is so placed upon thetwisting machine embodying the invention that the ends of said wire willbe held and retained by the plates 35, the latter of course beinglongitudinally adjusted upon the guide rod 25 to conform to the lengthof the loop of said wire. Then the medial portions of said wire loop areclamped between the opposed pairs of frames 41, through the medium of aslid- I ing plunger 47 When the wire is thus securely retained withinthe machine,the shaft 4 is manually depressed by treading upon the pedal5 whereby the rocking members 15 will be spread apart'to assume thedotted line positions shownin Fig. 3. This as will beobvious oscillatesthe frames 41, so that wire retained therein will be stretched apart tosubstantially conform to the shape of an armature with which the wire isadapted to be associated. After the wire has been suitably-stretchedtoassume a desired contour,

the same is released from the machine before the shaft 4 is allowed toassume its upright or elevated position. This can be accomplished byloosening the set screws 49 so as to permit of the retraction of theplungers and by removing the pins'39, the ends of said wire loops may beremoved from engage parts of the machine may automatically assume theirnormal positions and WM then ment with the structure 27, thuspermitting" the bent wire to be removed from the ma-; chine. Then byreleasing the shaft 4, the

be in condition forthe reception of a second loop to be bent."

From-the foregoing description taken-in 7 connection with theaccompanying drawings, itwill be seen that there is provided arelatively simple and practical machine for quickly and efficientlytwisting or bending electrical conductors to assume a desired formation,and by rendering practically every part of the machine adjustable, loopsof different sizes and characteristics may be formed upon the singlemachine herein set provided with a perpendicularly disposed part 56,which is formed with a plurality of slots 57, as is clearly shown inFig. 10. R0- tatably mounted within the enlarged head 58, earrieduponthe end of the shaft 55, is an adjusting screw 59, which hasitsrespective ends provided with a right and left threads 60 and 61,respectively. These threads engage within similarly threaded bores 62,formed in adjustable wire retaining structures 63, which latter areprovided with reduced ends 64 situated to lie within the slots 57,whereby upon the rotation of thefeed screw 59, said structures may beadjusted laterally, that is toward or away from each other. Thestructures are also provided with threaded spindles 65, which areadapted to receive a plurality of internally threaded plates 66, whichplates are employed for retaining and guying the wire 38 as the latteris fed from a reel structure (not shown). It will be apparent that uponthe rotation of the shafts 55, the structures 63 will be caused torotate about the shaft center, so that the wire 38 carried thereby willbe caused to assume the looped contour disa closed in Fig. 11. To removethis looped Wire from engagement with the wire retaining structures, theouter of the plates 66 is removed from engagement with the s indle 65,which permits the wire to be read1 y re moved from engagement with saidplates without affecting its contour. This preliminary treatment of thewire renders the same applicable for insertion into the shapingmechanism, whence the same may be bent to assume the shape shown in Fig.12, thus rendered applicable for convenient association with a motorarmature.

What is claimed is: j

1. A coil shaping machine of theclass described, comprising a bedstructure, a longitudinally extending guide element carried bysaidustruct-ure, endloop receiving mem bers slidably carried by saidguide rod, vertically adjustable blocks carried by said members andcapable of receiving the ends of wire loops positioned for spreadingwith in said machine, pivoted arms carried by the ends of saidstructure, means for effecting the-oscillation of said arms, verticallyadj ustable bars carried by said arms and loop gripping elementslongitudinally adjustable upon said bars and capable of gripping andretaining portions of said w1re loops situated intermediately of saidblocks, whereby upon positioned shaft having the upper end there ofconnected with said rod, a foot pedal car ried by the lower end of saidshaft, whereby upon the downward movement of saidshaft said arms will besynchronously oscillated,

springs for returning said shaft to its normal elevated position, andanadjustable stop collar carried by the upper end of said shaft andoperable to limit the degree of oscillation of said arms.

3. In coil shaping mechanism of the class described, including abedstructure, a longitudinally extending guide rod carriedby said bedstructure, spaced blocks slidably mounted upon said guide rod,vertically extending U shaped straps having the ends thereof connectedwith said blocks, a loop receiving structure carried by said straps,

said structure including a body portion shaped to be received by saidstraps, means for clamping said. body portion in vertically adjustedpositions within said straps, a plurality of opposed loop grippingplates carried by said body portion, means for varying the distancebetween the adjacent faces of said plates, and a loop retaining pinadapted to be situated within alined openings formed in said plates.

4. In. coil shaping mechanism of the class described, including a bedstructure, sets of oivoted arms carried by the ends of said structure,manually operated means for effecting the oscillation of said arms,vertically'adjusta ble bars carried by said arms and extendinglongitudinally of said bed structure. pairs of longitudinally andtransversely spaced loop gripping elements carried by said bars,means'for clamplng said 1 elements in longitudinally adjusted posi tionsupon said bars, an adjustable plunger to further lock said loops withineach of 10 carried by each of said elements and adapted said elements.

to friotionally engage with wire loops pass- In testimony whereof Iailix my signature ing through said elements in order to retain inpresence of two wltnesses. said loops in secured relation therewith,SAMUEL H BROWNING.

means for retaining said plunger in frictional engagement with saidloops, and a Witnesses: sliding plate carried by each of said elementsC. W. COLE, and located immediately above said plunger I. A. MILLAR.

Copies of this patent iney be obtained for five cents each, byaddressing the Commissioner of Patents, Washington, D. G."

